CN112483379A - Pump head assembly of high-pressure constant-flow pump of liquid chromatograph - Google Patents
Pump head assembly of high-pressure constant-flow pump of liquid chromatograph Download PDFInfo
- Publication number
- CN112483379A CN112483379A CN202011316547.4A CN202011316547A CN112483379A CN 112483379 A CN112483379 A CN 112483379A CN 202011316547 A CN202011316547 A CN 202011316547A CN 112483379 A CN112483379 A CN 112483379A
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- China
- Prior art keywords
- pump head
- side wall
- plunger
- sliding
- cavity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a pump head component of a high-pressure constant flow pump of a liquid chromatograph, belonging to the technical field of liquid chromatographs, comprising a pump head seat, wherein the left side wall of the pump head seat is provided with a chute, the interior of the chute is provided with a sliding sleeve in a sliding way, the right side wall of the sliding sleeve is provided with a groove, the interior of the groove is provided with a plunger seat in a sliding way, the right end of the pump head seat is provided with a pump head in a contact way, the left end of the pump head is provided with a fixed groove, the right end of the plunger seat is fixedly provided with a plunger, the right end of the plunger is fixedly connected with the fixed groove, the exterior of the plunger is fixedly sleeved with a compression spring, so that the pump head and the pump head seat can be conveniently installed and disassembled, after long-time use, when the sealing ring is aged, the sealing ring can be conveniently replaced, affecting the detection precision of the liquid chromatograph.
Description
Technical Field
The invention relates to the technical field of liquid chromatographs, in particular to a pump head assembly of a high-pressure constant flow pump of a liquid chromatograph.
Background
The pump head component of the existing high-pressure constant flow pump of the liquid chromatograph comprises a pump head, a pump head seat, a plunger part, a compression spring and a plunger sealing piece, wherein the pump head seat is provided with a cavity, the plunger part can reciprocate in the cavity along an axis, one end of the plunger part is provided with a roller, the other end of the plunger part is provided with a plunger fixedly connected, the plunger sealing piece is of an integral structure, the plunger penetrates through the plunger sealing piece, and the roller is connected with a cam of the high-pressure constant flow pump.
Present pump head subassembly is after using for a long time, and the condition of ageing and damage can appear in inside sealing member, influences pump head subassembly's continuation and uses, and the pump head can not receive effective protection when not using, and a large amount of dusts are attached to easily to the outside of pump head, when the influence is used once more, liquid chromatograph's detection precision.
Disclosure of Invention
The invention aims to provide a pump head assembly of a high-pressure constant-flow pump of a liquid chromatograph, which aims to solve the problems that the existing pump head assembly proposed in the background art is fixed in structure, inconvenient to replace an internal sealing element, incapable of effectively protecting the pump head, and easy to cause a large amount of dust to be attached to the outside of the pump head, so that the detection precision of the liquid chromatograph is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: a pump head assembly of a high-pressure constant-flow pump of a liquid chromatograph comprises a pump head seat, wherein a sliding groove is formed in the left side wall of the pump head seat, a sliding sleeve is arranged in the sliding groove in a sliding mode, a groove is formed in the right side wall of the sliding sleeve, a plunger seat is arranged in the groove in a sliding mode, the right end of the pump head seat is provided with a pump head in a contact mode, a fixing groove is formed in the left end of the pump head, a plunger is fixedly arranged at the right end of the plunger seat, the right end of the plunger is fixedly connected with the fixing groove, a compression spring is sleeved outside the plunger in a fixed mode, the left end of the compression spring is fixedly connected with the right side wall of the plunger seat, the right end of the compression spring is fixedly connected with the fixing groove, a sealing ring is fixedly sleeved outside the plunger, symmetrical first cavities are formed in the side wall of the pump, the external contact of pump head is provided with the protection casing, the fixed installation piece that is provided with of left side wall of protection casing, the mounting groove has been seted up to the right side wall of pump head, the installation piece with joint between the mounting groove, the second cavity has been seted up to the inside of installation piece, the internal fixation of second cavity is provided with installation mechanism.
Preferably, the fixed establishment includes two sliders, two the slider all with the lateral wall sliding connection of first cavity, two one side of slider is all fixed and is provided with first spring, two the one end that the slider was kept away from to first spring all with the lateral wall fixed connection of first cavity, two the slider is kept away from the one end of first spring and is all fixed and be provided with the connecting rod, two the one end that the slider was kept away from to the connecting rod all runs through the lateral wall of first cavity and extends to outside and fixed being provided with and press the briquetting, two the bar mouth has all been seted up to the left side wall of first cavity, the draw-in groove of symmetry has been seted up to the right side wall of pump head seat, two the left side wall of slider all is fixed and is provided with the kelly, two the left end of kelly all with the joint between.
Preferably, the mounting mechanism comprises two moving blocks, the two moving blocks are connected with the side wall of the second cavity in a sliding mode, a second spring is fixedly arranged on one side, adjacent to the two moving blocks, of the two moving blocks, symmetrical limiting grooves are formed in the side wall of the mounting groove, limiting rods are fixedly arranged at the ends, far away from the second spring, of the two moving blocks, one sides, far away from the moving blocks, of the two limiting rods extend to the outside through the side wall of the second cavity and are connected with the limiting grooves in a clamping mode.
Preferably, a sealing ring fixing piece is fixedly arranged at the left end of the sealing ring.
Preferably, the protective cover is made of a plastic material.
Compared with the prior art, the invention has the beneficial effects that:
1) through slider, first spring, connecting rod, press the common cooperation of briquetting and kelly, be convenient for to install the dismantlement between pump head and the pump head seat, after long-time the use, when the sealing washer appears ageing, be convenient for change the sealing washer.
2) Through the cooperation jointly of installation piece, movable block, second spring, gag lever post and protection casing, effectively protect the pump head, prevent that the pump head when not using, the surface from piling up a large amount of dusts, influence liquid chromatograph's detection precision.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of portion B of FIG. 1;
fig. 4 is an enlarged schematic structural view of a portion C in fig. 1.
In the figure: the pump comprises a pump head seat 1, a sliding sleeve 2, a plunger seat 3, a pump head 4, a plunger 5, a compression spring 6, a sealing ring 7, a protective cover 8, an installation block 9, a sliding block 10, a first spring 11, a connecting rod 12, a pressing block 13, a clamping rod 14, a moving block 15, a second spring 16 and a limiting rod 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-4, the present invention provides a technical solution: a pump head component of a high-pressure constant flow pump of a liquid chromatograph comprises a pump head seat 1, a chute is arranged on the left side wall of the pump head seat 1, a sliding sleeve 2 is arranged inside the chute in a sliding manner, a groove is arranged on the right side wall of the sliding sleeve 2, a plunger seat 3 is arranged inside the groove in a sliding manner, a pump head 4 is arranged on the right end of the pump head seat 1 in a contact manner, a fixing groove is arranged at the left end of the pump head 4, a plunger 5 is fixedly arranged at the right end of the plunger seat 3, the right end of the plunger 5 is fixedly connected with the fixing groove, a compression spring 6 is fixedly sleeved outside the plunger 5, the left end of the compression spring 6 is fixedly connected with the right side wall of the plunger seat 3, the right end of the compression spring 6 is fixedly connected with the fixing groove, a sealing ring 7 is sleeved outside the plunger 5, symmetrical first cavities are arranged on the side wall of the, the left side wall of the protective cover 8 is fixedly provided with an installation block 9, the right side wall of the pump head 4 is provided with an installation groove, the installation block 9 is clamped with the installation groove, a second cavity is formed inside the installation block 9, and an installation mechanism is fixedly arranged inside the second cavity;
the fixing mechanism comprises two sliders 10, the two sliders 10 are both in sliding connection with the side walls of the first cavities, first springs 11 are fixedly arranged on one sides of the two sliders 10, one ends, far away from the sliders 10, of the two first springs 11 are fixedly connected with the side walls of the first cavities, one ends, far away from the first springs 11, of the two sliders 10 are fixedly provided with connecting rods 12, one ends, far away from the sliders 10, of the two connecting rods 12 extend to the outside through the side walls of the first cavities and are fixedly provided with pressing blocks 13, the left side walls of the two first cavities are both provided with strip-shaped openings, the right side wall of the pump head base 1 is provided with symmetrical clamping grooves, the left side walls of the two sliders 10 are both fixedly provided with clamping rods 14, the left ends of the two clamping rods 14 are clamped with the clamping grooves, so that the pump head 4 and the pump head base 1 can be conveniently installed and fixed, disassembly and assembly;
the mounting mechanism comprises two moving blocks 15, the two moving blocks 15 are both in sliding connection with the side wall of the second cavity, one adjacent sides of the two moving blocks 15 are jointly and fixedly provided with a second spring 16, the side wall of the mounting groove is provided with symmetrical limiting grooves, one ends of the two moving blocks 15, far away from the second spring 16, are both fixedly provided with limiting rods 17, one sides of the two limiting rods 17, far away from the moving blocks 15, extend to the outside through the side wall of the second cavity and are clamped with the limiting grooves, so that the protective cover 8 is fixed outside the pump head 4, the pump head 4 can be effectively protected, and the situation that a large amount of dust is accumulated on the surface when the pump head 4 is not used is prevented, and;
a sealing ring fixing piece is fixedly arranged at the left end of the sealing ring 7;
the protective cover 8 is made of plastic material.
The working principle is as follows: after long-time use, when ageing appears in inside sealing washer 7, press two and press briquetting 13, two are pressed briquetting 13 and are driven lateral wall fixed connection's connecting rod 12 and remove, two connecting rods 12 drive lateral wall fixed connection's slider 10 and remove, two sliders 10 drive separately between left side wall fixed connection's kelly 14 and the draw-in groove, carry out the dismouting between pump head 4 and the pump head seat 1, be convenient for change sealing washer 7, when the pump head 4 does not use, place protection casing 8 in the outside of pump head 4, peg graft between messenger's installation piece 9 and the mounting groove, second spring 16 promotes both ends fixed connection's movable block 15 and removes, two movable blocks 15 drive joint between lateral wall fixed connection's gag lever post 17 and the spacing groove, fix the outside at pump head 4 with protection casing 8, effectively protect pump head 4.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The pump head assembly of the high-pressure constant-flow pump of the liquid chromatograph comprises a pump head seat (1) and is characterized in that a sliding groove is formed in the left side wall of the pump head seat (1), a sliding sleeve (2) is arranged inside the sliding groove in a sliding mode, a groove is formed in the right side wall of the sliding sleeve (2), a plunger seat (3) is arranged inside the groove in a sliding mode, a pump head (4) is arranged at the right end of the pump head seat (1) in a contact mode, a fixing groove is formed in the left end of the pump head (4), a plunger (5) is fixedly arranged at the right end of the plunger seat (3), the right end of the plunger (5) is fixedly connected with the fixing groove, a compression spring (6) is sleeved outside the plunger (5) in a fixed mode, the left end of the compression spring (6) is fixedly connected with the right side wall of the plunger seat (3), and the right end of the compression spring, sealing washer (7) have been cup jointed to the external fixation of plunger (5), the first cavity of symmetry, two are seted up to the lateral wall of pump head (4) the inside of first cavity is all fixed and is provided with fixed establishment, the external contact of pump head (4) is provided with protection casing (8), the fixed installation piece (9) that is provided with of left side wall of protection casing (8), the mounting groove has been seted up to the right side wall of pump head (4), installation piece (9) with joint between the mounting groove, the second cavity has been seted up to the inside of installation piece (9), the internal fixation of second cavity is provided with installation mechanism.
2. A pump head assembly x of a high-pressure constant-flow pump of a liquid chromatograph according to claim 1, wherein: the fixing mechanism comprises two sliding blocks (10), the two sliding blocks (10) are both in sliding connection with the side wall of the first cavity, one side of each sliding block (10) is fixedly provided with a first spring (11), one end, far away from the sliding block (10), of each first spring (11) is fixedly connected with the side wall of the first cavity, one end, far away from the first spring (11), of each sliding block (10) is fixedly provided with a connecting rod (12), one end, far away from the sliding block (10), of each connecting rod (12) penetrates through the side wall of the first cavity to extend to the outside and is fixedly provided with a pressing block (13), the left side walls of the two first cavities are both provided with strip-shaped openings, symmetrical clamping grooves are formed in the right side wall of the pump head seat (1), clamping rods (14) are fixedly arranged on the left side wall of the sliding block (10), and the left ends of the clamping rods (14) are connected with the clamping grooves in a clamped mode.
3. A pump head assembly of a high-pressure constant-flow pump of a liquid chromatograph according to claim 1, wherein: the mounting mechanism comprises two moving blocks (15), the two moving blocks (15) are connected with the side wall of the second cavity in a sliding mode, a second spring (16) is fixedly arranged on one side, adjacent to the two moving blocks (15), of the two moving blocks, symmetrical limiting grooves are formed in the side wall of the mounting groove, limiting rods (17) are fixedly arranged at one ends, far away from the second spring (16), of the two moving blocks (15), one sides, far away from the moving blocks (15), of the two limiting rods (17) extend through the side wall of the second cavity to the outside and are connected with the limiting grooves in a clamping mode.
4. A pump head assembly of a high-pressure constant-flow pump of a liquid chromatograph according to claim 1, wherein: and a sealing ring fixing piece is fixedly arranged at the left end of the sealing ring (7).
5. A pump head assembly of a high-pressure constant-flow pump of a liquid chromatograph according to claim 1, wherein: the protective cover (8) is made of plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316547.4A CN112483379A (en) | 2020-11-23 | 2020-11-23 | Pump head assembly of high-pressure constant-flow pump of liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316547.4A CN112483379A (en) | 2020-11-23 | 2020-11-23 | Pump head assembly of high-pressure constant-flow pump of liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112483379A true CN112483379A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011316547.4A Pending CN112483379A (en) | 2020-11-23 | 2020-11-23 | Pump head assembly of high-pressure constant-flow pump of liquid chromatograph |
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| CN (1) | CN112483379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929627A (en) * | 2022-12-12 | 2023-04-07 | 绍兴市雅克汽配有限公司 | Pump head and processing method thereof |
-
2020
- 2020-11-23 CN CN202011316547.4A patent/CN112483379A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929627A (en) * | 2022-12-12 | 2023-04-07 | 绍兴市雅克汽配有限公司 | Pump head and processing method thereof |
| CN115929627B (en) * | 2022-12-12 | 2023-07-07 | 绍兴市雅克汽配有限公司 | Pump head and processing method thereof |
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